Camera-carriage.



W. A. RIDDELL.

CAMERA CARRIAGE.

APPLICATION FILED OCT. 20. 19:5.

Patented Jan. 23, 1917.

2 SHEETS-SHEET 1.

WITNESS INVENTOR WL'ZZz'a/mfl'fiZidaZZ BY G his A TTORIVE r5 W. A. RIDDELL.

' CAMERA CARRIAGE.

APPLICATION FILED OCT. 20. 1915.

1,213,544. Patents? 2 17.

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' accompanying drawings,

this specification, and tothe reference-nu- WILLIAM A. RI DELEL, or noonns'rnn nnw onx, ASSIGNOR To EASTMAN KonAK COMPANY, or ROCHESTER, NEW YORK,

A CORPORATION j OF NEW YORK.

CAMERA-CARRIAGE g,

To all whom it may concern I ,Be itknown that I, WILLIAM A. RI ELL, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful, Improvements in Camera- Carriages; and 'I do hereby declare the following to be a full, cl'ear,.and exact descrip tion of the same, reference being had to the merals marked thereon.

parts and the space.occupied'thereby'and" increasing the efficiency of, the parts without rendering them difi'icult to specification.

My present invention relates to photography and more particularly to (photographic cameras-and it has for its object to 7 provide a simple, cheap and effective means for-locking the focusing element of a cam-m era, such as the front eor lens carriage, in"

different positions otadjustment on, the

camera bed. Theimprovements are direct-5 ed in part toward reducing thenumher of toward clamping release by the o-perators fingers.

To theseand other ends the invention re-' sides in certain improvements andcombinw tions of parts all as will beherein'after more fully described, the novel features being pointed out in the claims atthe end of the In the drawings: Figure 1 is aside elevation of a photographic cameraprovided with a focusing deviceembodying a lens carriagec'onstructed in accordance with and illustratlng one embodiment of my inven-J- 131011; Fig. 2 1s a front elevation thereof;

Fig. 3 is an enlargedsection taken substantially onthe line 3-3 of Fig. 1 with the j parts in their normal or clamping position; Fig. l is atop plan view of the carriage partly in horizontal section through the front board also withtheparts in the normalposition and on an enlarged scale;.Fig.

' 5 is a vertical section taken substantially on the line .5-5 of Fig. 4;

similar to Fig. 5 with the released; Fig. 7 is a detail perspective view of the camtrack on the carriage block; Fig... 8 is a detail perspective view of the wear plate that rests uponthecam track, and Fig. '9' is a detail perspective View. ofthe'. rotary cam thatrests on the wear plate.

Similar reference numerals throughout the several figures indicate thesame parts. g

In the embodiment of the invention illu'sforming a part of wardly thereof-it is bed. This locking Fig. 6 is a view clampinginember p A is a tubular finger piece,19 that may be 7 when thethumb and fore trated. 1 indicates the camera bed and2 the 'mounted on the carriage block h f o,

The bed 1 is provided with undercut tracks (Fig. 3) indicated at 5"o'n,which slide 11ps6 on the carriage block while shoulders Y -on thelatterproject'down between the tracks toiprevent lateral movement. The carriage block 4 is pierced centrally -byavertical bore or aperture Swhile forpierced by a horizontal transversebore'9. A' cross-head '10 having inclined ends, as shown, extends ,beneath both tracks 5 in a manner'to'clamp against them when raised, such cross-head being located beneath *the carriage.

block and terminating in ahead or shoulder 12 abovethe latter. track 13 is formed in the block 4" at the bottom of a recess 14: to surround the aperture" 8 and the stem 11. Resting" on this cam track is a similarlyformed wear pilate'or spring washer 15 having projections'lfithatengage the wallsof the recess 14 to prevent" it from turning whileontop, of'the washer M disk 17that turns about the stem 8 beneath the head 12 thereof.

is placed a rotary. cam

I, Specification of Letters Patent. Patented'J'an. 23; 1917- Application filed October 20, 1915. Serial N o. 56 ,949.

front' or lens board with" which the bellows 3 is connected '70 p Rigidly con- .nected thereto is a stem 11 extending vertically through the aperture 8 in thecarriage Y Y I A spiral or double cam It will be obvious; from an inspection of i Figs. 7, 8and 9 that as the cam plate1;7 is

rotated to-the right," it will ride upon the" cam track and reacting againstthe head 12 of the spindlefraise the cross-head 10 from the positionof Fig. 6 so that it will clamp against the under position to the carriage block t and lock the latter to the track in a fixed position on the position of the cross-head sides of the tracks 5 in op- V I is 'its normal position and it is maintained 7 in the following manner :Fixed in the right handend of'the horizontal bore 9 is "a tubu la'r finger piece 18 while sli dable in the remainingportion of said bore or recess to, project from the opposite side ofthe block pressed. inwardly finger are placed upon the two finger por tions against the tension of an inclosed coiled the block4 that in-' Itersects the bore'9' and engages in a recess 23 in the tubular portionof the reciprocaspring 20. i A downwardly projecting finger 21 onthe-cam disk 17 operates inga segmental slot'22 in the top of tory finger piece Thus, the tendency of V the spring 20 is to move the finger piece 19 outwardly and rotate the cam disk 17 to the It Will be seen that the' cam action gives great power to the clamping movement,

wvhi'le at the saiiie time the leverage on the cam disk 17 is in favor of both the operator and the spring 20 which latter need not be made exceptionallyheavy.

I claim'as my invention:

'1. In a camera, the coinbination' with a track and a block movable thereon, of a track gripping'inember comprising a crossv head adapted to engage the track in opposition to the block and a stem connected to the cross-head and extending through the bloc-k5 a rotarycam arranged to turn about the V stem as 'a centerand to act against the latter and against the block and a thrust memberio'r actuating the cam;

2. In a camera, the combination with a track and a block movable thereon and; pro vided with a circular cam track, of a track gripping member comprisinga cross head adapted to engage the track in oppositionto the block and a stem connected to the cr csshea'd'and extending through the block centrally of the cam track, a rotary cam 7 disk arranged to; turn about the, stem as a center andto act against the latterand against the: cam? track, said disk being provided with an offset finger and afthrust member arranged ,to reciprocate in the block and to, cooperate With the said finger on the cam disk;

In a camera carriage, the combination with a track and a block slidable on top of thelatter of a cross-head engaging beneath the track, a stem on the cross-head extending through the block and having a headed portion and a rotary cam arranged to turn on the stem'and to act against the headed the block to portion thereof and ag i t raise the cross-head into grip i engagg ment With the track. 1 r 7 4. In a camera carriage, the combination with a track and a block movable, thereon and'provided'with a vertical opening surrounded by a cam track and With a trans cross-head adapted to en verse recess, of a gage the track in opposition to theblock, a stem on the cross head extending through the "vertical opening, a cam disk mountedto turn on the stem and to cooperate With the cam track to move thestemver'tically and a j thrust member" arranged to reciprocate in r the transverse openlng and-to cooperate with the cam diskto turn the latter.

I 5. In a camera carriage, the combination with a track and acarnage block movable the track in opposition'to the'carriage block,

I thereon'having a transverse recess therein, 1 of a' clamping member adapted to engage a rotary; device for said member} a tubular thrust member for actuating the rotarydevice arranged to reeiprocatein the recess in the carrlage'block and'asprmgwlthin the 1 tubular thrust memberffor moving the lat{ ter' in one direction.

Witnesses P; WESLEY HART, F; M. PAGE. I

WILLIAM aninnnnn Copies of thispatent may be obtamedd'or five cents each, by addressingthe" fioiilmissioner of Iatnts, f

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